Coal-mining machine.



PATENTED JAN. 9, 1906.

0 WISSEMANN GOAL MINING MACHINE. APPLICATION FILED DEC 15 1902 5SHEETS-SHEET 1.

fjwenor No. 809,350. PATENTED JAN. 9. 1906.

0. WISSEMANN.

GOAL MINING MACHINE. APPLICATION FILED DEO.15, 1902.

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P. N N A M E S S T. W C

GOAL MINING MACHINE.

AIPLIOA'IION FILED DEG. 16, 1902.

5 SHEETS-SHEET 3.

I ifilnesses:

PATENTED JAN. 9, 1906.

C. WISSEMANN. COAL MINING MACHINE.

- APPLICATION FILED DBO.15, 1902.

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00 0 9 1 0% N A J D E T N E T A P c WISSEMANN GOAL MINING MACHINE.

APPLICATION FILED DEC 15 1902 CONRAD WISSEMANN, OF GELSENKIRCHEN,GERMANY.

COAL-MINING MACHINE.

Specification of Letters Patent.

Patented Jan. 9, 1906.

A li atio fil d December 15, 1902. Serial No. 135,200.

To all whom it may concern.-

Be it known that I, CONRAD WISSEMANN, a subject of the King of Prussia,German Emperor, residing at Gelsenkirchen, Kingdom of Prussia, GermanEmpire, have invented new and useful Improvements in Coal-MiningMachines, of which the following is a specification.

In United States Patent No. 701,979, of June 10, 1902, granted to me andrelating to machines for extracting coal in pieces from the mines, Ihave described a machine where the stratum of coal is severed off bymeans of a circular saw. This machine, however, is ncit very welladapted for hard coal general y.

My present invention is intended to provide a machine fitted with boringdevices and suitable for the breaking of hard coal, anthracite, and thelike.

The cutting off from the rear of the stratum or layer of coal isefiected in my present invention by driving a series of boring-holesarranged vertically one underneath the other and into whichsuitably-shaped steel heads, which are enlarged at their rear ends, areintroduced, which break the coal to pieces.

In the accompanying drawings, Figure 1 is a plan view, partly insection, of my improved coal-mining machine; Fig. 2, a rear elevation ofthe machine; Fig. 3, a plan view of the entire working mechanism, on anenlarged scale, with some of the parts omitted; Fig. 4, a side view ofthe entire arrangement of the boring devices with the covers removedFig. 4 a detail side view, artly in section, of part of the supporting-pate and arm; Fig. 5, a side view of the operating parts effecting thebreaking away of the coal from the inside of the boring-holes with someof the parts omitted; Fig. 6, an enlarged cross-section on line a b,Fig. 4; Fig. 7, a similar crosssection on line 0 d, Fig. 4, showing theoscillating plate in position; and Fig. 8, a similar cross-section online 6 f, Fig. 4, showing the oscillating plate in position.

The general construction and arrangement of my machine is similar tothat disclosed in my previous United States Patent No. 701 ,979. Theaxles of the car 1 are rotated from the motor-engine 2 by means of gears3 and 4, and gear-wheels 5, 6, 7, and 8, respectively, are guided in adirection parallel to the impact in a suitably-bored groove by means ofthe laterally-displaceable roller 9. The car is provlded with the drum10, on which the feed-wires 11 for the electric current for themotor-engines are automatically wound up. The other end of the car isprovided'with a displaceable plate 12, on which is mounted one end of anarm 13, which extends laterally above the car. The other end of arm 13is provided with a base-plate 131, which by screws 130 is secured to anextension 147 of a base-plate 14, on which the instruments aresupported.

The boring devices, of which three have been shown in the drawingsarranged one underneath the other, but the number of which may of coursebe larger or smaller, are mounted in a peculiar manner on the verticalplate 14. To the latter are bolted two verticallyadjustable end plates140, arranged in alinement with plate 14. Plates 14 140 140 are providedat their forward ends 15 with longitudinal semicircular guide-grooves,which are covered near their front ends by caps 46, so as to formtubular guides for the steel tools or drills 16, the front ends of whichare provided with bits 17. The caps 46 may be held in position by asuitable groove-andfeather connection. The distance between the bits isadjustable to adapt the machine for mining coal of different degrees ofhardness. For this purpose plates 140 are provided with slots 141 148for the passage of clamp-screws 142 146, respectively, of plate 14.

The drills 16 are attached at their rear ends by means of cross orwabble joints 18 to spe cial shafts 19 190. The shaft 19 of the centraldrill 16 is by a universal oint 240 connected to shaft 21 of theelectromotor 20. The shafts 190 of the upper and lower drills 16 are ofsquare form in cross-section and are telescoped by thecorrespondingly-bored hollow shafts 47, so as to permit the distancebetween the bits to be readily adjusted. The shafts 47 are rotatablymounted in bearings 48 of plates 140, which are adjustable according tothe inclination of shafts 19 47, such in clination varying with thedistance between the bits.

For operating the device I use the electromotor-engine 20, supported onthe plate 14. The shaft 21 of the said electromotor-engine is extendedat the front end of the machine and is in direct engagement with themiddle boring device, and by means of the pinions 22 it imparts movementto the counter-shafts 23, which are connected by swivel, cross, orwabble joints 24 to the shafts 47 19, which, as already explained,operate the bits 17 by means of swivel or wabble joints 18. The plate 14is guided by the wheels 25, Fig. 2, journaled in bearings 44 of plates140.

The motor-engine 20 is not only intended to operate the borers, but italso operates the device for the breaking away of the coal from theinside of the bore-holes. Said device consists of a plate 26, composedof three parts, which is represented in Fig. 5 of the drawings, and theconnections of which with the boring devices will be apparent from Fig.3. The three parts of plate 26 may be so connected as to permit alateral adjustment corresponding to the distance between the bits. Theshape of the plate 26 corresponds to that of the plate 14, the plate 26being provided with forwardly-extending arms 27, equal in number to thatof the toolholders of the plate 14. These arms 27 are longitudinallygrooved at their forward ends, so as to partially embrace the rods ofthe borers at their front ends. The arms 27 are pivotally attached at 28to the arms of the plates 14 140, so as to be capable of rather vigorousoscillation on their pivots for the breaking loose of the coal. Duringsaid oscillation the plates 26 are guided by curved or inclined guides142 143 of plates 14 140. These guides pass through correspondingopenings 144 145, respectively, of plates 26, Figs. 3 and 5. With thisend in view I provide a worm 29 on themotor-shaft 21, the said wormengaging with a worm-wheel 30, suitably mounted at the side thereof. Tothe shaft 50 of the said worm-wheel, mounted in bearings 49, are keyedtwo pairs of camdisks 31 32. The inner faces of disks 31 haveprojections 35 and receding sections 36 and serve to impart motion tothe saw-like cutters 41 in manner hereinafter described. The peripheriesof disks 32 are engaged by cam-rollers 33, mounted in recesses of plate26. These rollers are forced against the disks 32 by a spring 100,suspended between plates 26 and 14. The pointed peripheral part 320 ofcam-disk 32 forces the rear end of the plate 26 laterally inward atevery revolution of such disk, thereby causing the coal to break loose,this inward movement of the plate being immediately followed by thewithdrawing of the same by means of the spring. The oscillation of theplate is indicated by dotted lines in Fig. 3 of the drawings. 1n orderto be able to also remove the block of coal remaining between theboreholes upon the pushing forward of the device, the crushing-plate orpush-plate 26 is further provided with the attachment best shown in Fig.5 of the drawings. The two center cam-disks 31 31 serve, as abovestated,

to actuate the cutters 41, mounted upon plate 26, and are operated inthe following manner: The inner faces 35 36 of said disks are engaged byrollers 37 of elbow-levers 39, fulcrumed at 38 to plate 26. To the otherarms of levers 39 are pivoted links 40,which pass freely through asuitable guide 53 and are pivoted to serrated knife-plates or cutters41. These cutters are guided upon plate 26 by pins 52, engaging inclinedslots 51 of the cutters. Springs 43, interposed between levers 3.9 andplate 26, (of which but one is shown in the drawings for the sake ofgreater clearness,) press rollers 37 against cam-disks 31, the pressureupon said disks being counterbalanced by guide-rollers 34, so as toavoid vertical displacement of the same. In front of the said plates 41a wedge 42 is fastened to the plate 26. If by the rocking of theelbow-levers and the corresponding movement of the push-rods theknife-plates 41 are pushed forward, the knife-plates are forced to theoutside by the wedge 42, as shown in Fig. 5. The shape of the innerfaces of cams 31 is such that the outward movement of the cutters 41commences before the plate 26 is pushed inward by the peripheral cams32. During the following inward movement of plate 26 the cutters 41continue to move outward, and as soon as the plate 26 swings back thecam-rollers 37 will engage the reduced section 36 of cams 31 to permitthe return movement of the elbow-lever 39,which causes the knife-platesto reassume their original position, the push-rods being withdrawn bythe action of the spiral springs 43. The operation of this part of thedevice is effected as follows: When the work is commenced, the bits ofthe borers are parallel to the joint of the layer of coal. The bits areoperated by the motor-engine 20, and when set in motion they are fedforward with the car 1, the motor-en ine 2 of which is also started.Along with the guides 15 46 of the hits the front parts of the plate 26are also introduced into the bore-holes, and by means of their vigorousvery powerful oscillations they effect the breaking loose of the coal,the pointed knives on the middle part of the plate serving at the sametime to shear off the coal between the bore-holes.

What I claim is 1. In a coal-mining machine, the combination of amotor-engine, with a series of borers arranged vertically one below theother and acting to drive holes parallel to the joints of the layers ofcoal, plates acting in the manner of wedges, the front ends of whichenter the bore-holes, and means to rock said plate on a pivot at theirforward ends.

2. A coal-mining machine comprising in combination a series of severalborers arranged vertically one below the other, a crushing-plate and amotor-engine operating the borers and connection of said motor-enginewith a cam-disk at the rear end of the crushing-plate and serving toimpart oscillating movement to said crushing-plate.

3. A coal-mining machine comprising in combination a series of severallevers arranged vertically one below the other and a crushing-plateacting like a wedge, and means to impart a continuous rocking movementto the rear end of said plate, a frame or scaffold, borers supportedthereby, a motor-engine mounted upon the plate, a car supporting theframe or scaffold and continuously feeding the entire mechanism by theaction of the motor-engine.

4. In a coal-mining machine, the combination of a series of borersarranged vertically one below the other, with a crushing-plate actinglike a wedge and entering the boreholes at its front end, means to rockthe rear end of said plate, the middle section of said plate beingprovided with movable knifeplates, and with means for moving saidknifeplates.

5. A coal-mining machine comprising in combination a series of severalborers arranged vertically one below the other, and a crushing-platehaving a wedge-like action,

movable knife-plates on said crushing-plate, means for operating thecrushing-plate, and means for operating the knife-plates.

6. In a coal-mining machine, the combination of a car with a series ofrotatable drills arranged above one another, and means forsimultaneously breaking the coal at the side of the drills,substantially as specified.

7 In a coal-mining machine, the combination ofa car with a series ofrotatable drills arranged above one another, a pivoted pushplate, andmeans for oscillating said plate in a lateral direction, substantiallyas specified.

8. In a.coal-mining machine, the combina tion of a car with a series ofrotatable drills arranged above one another, a pivotedlaterally-oscillating push-plate, cutters slidable upon said plate, andmeans for o erating said cutters, substantially as specified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

CONRAD WISSEMANN.

Witnesses PETER LIEBER, WILLIAM ESSENWEIN.

